Digital Commons Network^™

High Temperature Helical Tubular Receiver For Concentrating Solar Power System, Nazmul Hossain

Open Access Theses & Dissertations

In the field of conventional cleaner power generation technology, concentrating solar power systems have introduced remarkable opportunity. In a solar power tower, solar energy concentrated by the heliostats at a single point produces very high temperature. Falling solid particles or heat transfer fluid passing through that high temperature region absorbs heat to generate electricity. Increasing the residence time will result in more heat gain and increase efficiency. A novel design of solar receiver for both fluid and solid particle is approached in this paper which can increase residence time resulting in higher temperature gain in one cycle compared to conventional …

Systematics Of The African River Frog Genus Amietia (Anura: Pyxicephalidae) From Eastern Democratic Republic Of The Congo, Thornton Robert Larson

Open Access Theses & Dissertations

The African river frog genus Amietia is found near rivers and other lentic water sources throughout central, eastern and southern Africa. Because the genus includes multiple morphologically conservative species, taxonomic studies of river frogs have been limited. We sampled 49 individuals of Amietia from multiple localities in and near the Albertine Rift (AR) of Burundi, Democratic Republic of the Congo and Uganda. We utilized single-gene (16S) and concatenated (12S, 16S, cytochrome b and RAG1) gene-tree analyses and coalescent species-tree analyses to construct phylogenetic trees. Two divergence dating approaches were used in BEAST, including secondary calibration points with 12S, 16S and …

Expression And Functional Analysis Of Lipids And Glycolipids From The Mammal-Dwelling Stages Of Trypanosoma Cruzi, Felipe Gazos Lopes

Open Access Theses & Dissertations

Trypanosoma cruzi is the causative agent of the life-threatening Chagas disease, in which increased platelet aggregation related to myocarditis is observed. Platelet-activating factor (PAF) is a potent intercellular lipid mediator and second messenger that exerts its activity through a PAF-specific receptor (PAFR). Previous data from our group suggested that T. cruzi synthesizes a phospholipid with PAF-like activity. The structure of T. cruzi PAF-like molecule, however, remains elusive. Here, we have purified and structurally characterized the putative T. cruzi PAF-like molecule by electrospray ionization-tandem mass spectrometry (ESI-MS/MS). Our ESI-MS/MS data demonstrated that the T. cruzi PAF-like molecule is actually a lysophosphatidylcholine …

One Size Does Not Fit All: Looking Beyond Homeless Housing-First And Housing-Ready Approaches To Enhanced Models Of The U.S.-Mexico Border And New York City, Jacqueline Loweree

Open Access Theses & Dissertations

This study explored two "enhanced" service and housing models for homeless persons in the U.S.-Mexico border and in New York City. From data collected in both regions, this study examined the relationship between homeless recidivism and the provision of services. The results suggest that services alone have minimal impact in reducing homeless recividism. This study also reviews the relationship between homelessness and poverty. To evaluate this interconnection, a socio-historical analysis was presented reviewing the application of poverty theories from the last two centuries, to policy-driven approaches with aims to treat indigence, poverty, inequality and more contemporary homeless issues. Using the …

La Otra Frontera: Exiles, Engineering, And State Power In The Chiapan Borderlands, Aaron Margolis

Open Access Theses & Dissertations

This Dissertation examines the political, cultural, and economic history of the Chiapan borderlands from its political incorporation into the post-independence Mexican state in 1821 until the arrival of Guatemalan refugees in the 1980's. This history is explored through the directives, interactions, and policies of officials from Mexico City as the borderlands drifted in and out of the orbit of the priorities of the changing governments of independent Mexico.

A large part of the Dissertation examines how the post-revolutionary Mexican state re-discovered and conceptualized the borderlands as a both a threat to national security and a potential site of energy derived …

Damas Y Caballeros, Guadalupe Mendez

Open Access Theses & Dissertations

Collected Poetry - Manuscript over socio - political and culturally relevant context.

Keep Your Head Up: Building Life Skills In Youth For Social Reintegration And Success, Olga Lizbeth Ochoa

Open Access Theses & Dissertations

There are multiple factors that contribute to a juvenile's future incarceration when facing difficult environmental circumstances: adjudication (it is like an adult criminal conviction, but generally does not subject the youth to the same direct consequences), community characteristics, the age a young person is discharged, criminal history, and gender. This research is important because it applies social science research in community-based settings to address a social concern, moves beyond theoretical research while contributing to a new orientation of an applied project, and provides a model of university-community partnerships for finding innovative strategies to address issues of social concern for local …

Latina/O High School Students' Standpoint On Environmental Justice In A Border Community: A Phenomenological Study, Cynthia Christina Ontiveros

Open Access Theses & Dissertations

This qualitative research is a transcendental phenomenology seeking to understand Latin@ high school students’ perceptions and standpoints as they participated lessons that addressed border environmental justice issues in an underrepresented, marginalized community. Seven students from Borderland High School, enrolled in a senior level course, Environmental Science, participated in the study which focused on their experiences in an environmental justice air quality thematic unit built around the complex issues surrounding a local refinery, American Smelting and Refining Company (ASARCO). The study analyzed the meaning students made and their standpoints regarding the impact of the factory and its one-hundred year history polluting …

Comic Book Fandom: An Exploratory Study Into The World Of Comic Book Fan Social Identity Through Parasocial Theory, Anthony Robert Ramirez

Open Access Theses & Dissertations

Comic books and their extensive lineup of characters have invaded all types of media forms, making comics a global media phenomenon that are having a wider profile in media and popular culture. The community of comic book fans has grown as well. The purpose of this study is to investigate how these fans identify with their favorite comic book character(s) through the application of parasocial theory, in order to discover if and how various identification levels lead to the fan's level of fandom or attachment. Various fans of comic books are interviewed, in order to investigate attachment levels and level …

The Rock And The Hard Place: How The Prison Psychotherapist Balances Treatment Needs With Security Needs, Elijah Paige Ricks

Open Access Theses & Dissertations

Research on traditional psychotherapy suggests that the quality of the relationship between the therapist and client is the most important element of effective mental health work. In contrast, prison policies often require that staff maintain an emotional distance from offenders, and many elements of the prison environment and characteristics of the offenders may be counterproductive to the therapeutic relationship. Due to the competing demands of psychotherapy and prisons, it is important to understand how prison psychotherapists reconcile the aims of both in their work. This Dissertation examined the psychometric properties of a new measure of how prison therapists balance the …

Carbon Based Nano-Composite Materials For Energy Storage Applications, Gerardo Rodriguez Melo

Open Access Theses & Dissertations

Energy storage systems and devices are an integral part of advanced electronic technology. Electronic technology is ever-advancing, but in order to do so, it must be supported by all its systems. The energy storage system is one key system that may dictate the performance and limitation of such electronics. Thus, research emphasis on energy storage devices has been on improving the performance of energy storage devices, such as: improved energy and power density, increased stability and cycle life, as well as reduced costs. Lithium-ion-batteries, and supercapacitors offer the potential to meet energy storage demands and to be improved further upon. …

Visual Arts Teacher Preparation, Lucina Rodriguez Zarate

Open Access Theses & Dissertations

Studies have found that visual arts education is an essential part of students' overall educational development. Students exposed to a robust visual arts education develop critical and analytical thinking skills, learn to evaluate their own work and the work of their peers, learn to interpret subject matter in various ways, and are encouraged to engage in their community, all of which help students develop a higher self-esteem and create a positive attitude towards learning. However, to achieve such positive results, visual arts educators need to acquire the proper training to learn how to develop and deliver well-rounded curricula with the …

Mobile Professional Development: Taxonomic Levels Of Learning On Teachers' Tpack Perceptions And Acquisition Of Technology Competencies, Raul Saldana Jr.

Open Access Theses & Dissertations

As it stands, the integration of technology can be advantageous for teachers, students, administrators, and parents, yet teachers are expected to teach and facilitate learning with new technologies in order to prepare students to succeed in a global economy. As the Part D of the Enhancing Education Through Technology Act of 2001 (Part D - Enhancing Education Through Technology, n.d) states, one of its purposes is to "enhance ongoing professional development of teachers, principals, and administrators by providing constant access to training and updated research in teaching and learning through electronic means," one of its goals is to "encourage effective …

A Geophysical Study Of The Castle Mountain Fault System And Matanuska-Susitna Valley Near Anchorage, Alaska, Shane Michael Schinagel

Open Access Theses & Dissertations

The Castle Mountain Fault (CMF) is the closest (~50 km) active fault to Anchorage, Alaska. Located within the Matanuska and Susitna (Matsu) Valleys, the CMF shows repeated, unmistakable evidence for Holocene motion. Recent geologic studies estimate that this fault is capable of producing earthquakes of magnitude 7.0 - 7.1. The Anchorage metropolitan area (which includes the Matsu Valley) contains most of Alaska's population as well as vital shipping and transportation facilities that serve much of inland Alaska. Expected magnitude >7 earthquakes pose seismic hazards to the expanding Anchorage area.

While several mapping and trenching studies have been conducted along the …

A House All White And Empty Against The Night Sky, Jesus J. Silveyra

Open Access Theses & Dissertations

Not available.

Monitoring And Understanding Decadal Scale Changes In Hydrology, Productivity And Carbon Balance In Arctic Tundra Ponds, Christian Gerardo Andresen

Open Access Theses & Dissertations

The Arctic is known for containing large stocks of soil organic carbon, which exists frozen in permafrost in a greenhouse inert state. With predicted future warming in these high northern latitudes, the mobilization of stored soil organic carbon and release to the atmosphere may increase and induce further positive climatic feedbacks. Previous studies have shown that Arctic wetlands and ponds cover a large percentage of the Arctic Coastal Plain and contribute large amounts of carbon to the atmosphere; however, it remains largely unknown how these systems are responding to a warming climate and how this change will impact regional carbon …

Un Cri Dans Le Silence: Une Analyse Culturelle Et Littéraire De L’Émergence De Thèmes Homosexuels Dans Les Oeuvres De Gide Et Guibert, Ryan James Evelyn

Honors Theses and Capstones

This thesis, originally written in French, aims to explore the ways in which male homosexuality is represented and defined in contemporary French literature through the novels of André Gide and Hervé Guibert. I will argue and defend the existence of two cultural domains of existence, the private and public, and how each is represented in Les Faux-monnayeurs (1925) and À l'ami qui ne m'a pas sauvé la vie (1990), respectively. French literature of the 20th century in regards to homosexuality endured a cultural and sociological evolution that resulted in the disappearance of the private domain and the creation of the …

The Moderating Effects Of Praise On The Relationship Between Autonomy And Work Motivation, Alyssa Washakowski

Honors Theses and Capstones

This study applied self-determination theory principals and the already existing links to work motivation to examine how praise would moderate the relationship between work motivation and autonomy. Previous literature has already stated that there is a positive relationship between autonomy and work motivation and also a positive relationship between praise and work motivation. A sample of 54 participants was used in a 37 question survey highlighting questions on work motivation, autonomy and praise. Our results yielded that there was in fact a significant relationship between praise moderating the effects of autonomy on work motivation. From this research it is evident …

Peers Inspiring Peers: Why A Summer Bridge-To-College Program Benefits From This Partnership, Janet Liou-Mark, A.E. Dreyfuss, Mursheda Ahmed, Christopher Chan, Karmen Yu

Publications and Research

A Bridge-to-College Summer Academy for Teaching Assistant Scholars, who serve as Peer Leaders and small-group instructors in several New York City high schools, was designed and held at New York City College of Technology, CUNY. The Summer Academy was designed to acclimate the Teaching Assistant Scholars (TAS), many of whom are underrepresented minority students, to college life. College Peer Leaders assisted in motivating and encouraging incoming freshmen in gaining the academic skills needed to successfully navigate a college environment. The Peer Leaders also facilitated three-day mathematics preparatory workshops that provided students with the confidence to excel in their first credit-bearing …

We Came, We Saw, We Conferenced: Capturing And Sharing Campus Events At Georgia Southern, Debra G. Skinner, Ashley D. Lowery

University Libraries: Faculty Presentations

Your campus may be regularly hosting conferences and other events; what happens to the valuable scholarship presented over the course of the event? And do the conference organizers at your institution have an efficient and simple way to manage the submission, review, and acceptance process? At Georgia Southern University, the Zach S. Henderson Library has partnered with the Division of Continuing Education and other offices on campus to not only host 19 conferences on Digital Commons@Georgia Southern but also help the conference organizers streamline their review workflows. These successful partnerships have led to some additional, unexpected benefits, such as the …

Self-Reported Experiences Of Climate Change In Nigeria: The Role Of Personal And Socio-Environmental, Idowu Ajibade, Frederick Ato Armah, Vincent Kuuire, Isaac Luginaah, Gordon Mcbean

Geography Faculty Publications and Presentations

In this study, we examined the individual and socio-environmental factors that mediate differential self-reported experiences of climate change in coastal communities in Lagos, Nigeria. Binary complementary log-log multivariate regression was used to model residents’ experiences of changing rainfall patterns, ocean surges, and flood events. An analysis of both compositional and contextual factors showed that there were urban communities where vulnerability to flooding tends to be clustered, and that this was not fully explained by the characteristics of the people of whom the community was composed. This study, thus, underscores the importance and complex nature of the interaction between personal and …

A Pragmatic Approach To Interpreting The Federal Rules, Suzette M. Malveaux

Publications

No abstract provided.

Introduction To Big Horn General Stream Adjudication Symposium, Charles Wilkinson

Publications

No abstract provided.

Increasing Women’S Political Participation In Lebanon: Reflections On Hurdles, Opportunities, And Hope, Camille Nelson, Zeina Chemali, Tanya Henderson

Scholarly Articles in Law Reviews & Journals

Lebanon stands out in the Middle East for its relative political openness, religious freedom, and the academic and professional achievements of Lebanese women. Yet, paradoxically, it has one of the lowest rates of women's political participation in the region. This paper is the result of an initiative undertaken by the Lebanese government in July 2012 to increase women's political participation. Through this initiative, sex-segregated workshops on women's political empowerment were held for male and female representatives of Lebanon's political parties. The goal was to start a productive conversation that would ultimately lead to progress from the 2012 status quo of …

Online Assessment Of Negotiation Skills Through 3d Role Play Simulation, D Pacella, A Di Ferdinando, E Dell'aquila, D Marocco

School of Engineering, Computing and Mathematics

The lack of standardised technological tools to assess psychological characteristics allows traditional tests to be still widely used, though these tests require double processing and expensive procedures. ENACT is both a serious game for a standardised assessment of the user negotiation skills and an Intelligent Tutoring System, which makes use of the data collected during the interaction in order to generate a tailored environment for the user to experience and improve their skills and be guided through learning.

Family Timeline Mural Drawing With Asian American Families, Rieko Miyakuni, Catherine Ford Sari

Counseling Faculty Research

According to the 2010 U.S. Census Report, Asians were the fastest-growing race and ethnic group in the United States between 2000 and 2010, increasing by 43.3% (Hoeffel, Rastogi, Kim & Shahid, 2010). “Asian” refers to a person having origins in any of the original peoples of the Far East, Southeast Asian, or the Indian subcontinent, including, for example, Cambodia, China, India, Japan, Korea, Malaysia, Pakistan, the Philippine Islands, Thailand, and Vietnam (Hoeffel et al., 2010).

The majority of Asian Americans are foreign born or first-generation living in multigenerational households. As a result, three or more generations typically live under the …

Expertise And Disbelief: Post-1945 American Attitudes Toward The Authority Of Knowledge, Terry Wagner

LSU Doctoral Dissertations

“You can’t beat brains,” said President John Kennedy of the intellectuals and technicians he assembled in his cabinet. Kennedy was perhaps the greatest political champion for the virtues of expertise. However, all over America during the 1960s and ‘70s, diverse groups voiced doubts about how much experts, such as social scientists, policy specialists, and others, actually improved life. This dissertation examines how movements on the political left and right, and spiritual ruptures such as the rise of ‘60s counterculture and of evangelicalism, spoke in different language to express a similar point: human mastery over the world is profoundly limited. Many …

Recovery From Exercise: The Influences Of Supplementation And Rest Interval, Ryan Miskowiec

LSU Doctoral Dissertations

Recovery from exercise is immensely important and under studied. The experiments conducted throughout this research have focused on testing the effects of rest interval during resistance exercise and the efficacy of acetic acid feeding on recovery rate. To elucidate the relationship between rest interval and recovery energy expenditure two experiments were undertaken. These experiments were designed to alter only rest interval while maintaining work intensity and volume. No difference in the total energy expenditure during the short phase of recovery (first hour) was found, but energy expenditure during the prolonged phase (days post exercise) was minorly increased by lowering rest …

Mechanisms Controlling Stem Cell Differentiation, Tran Doan Ngoc Tran

LSU Doctoral Dissertations

Mesenchymal stem cells are multipotent cells that can differentiate into many cell types. However, the molecular mechanism controlling this process remains unclear. We utilized rat dental follicle stem cells (rDFSCs) and human adipose derived stem cells (hASCs) to study the mechanisms controlling osteogenesis and adipogenesis. Elevations in the intracellular Ca2+ concentration are a phenomenon commonly observed during stem cell differentiation but cease after the process is complete. The Transient Receptor Potential Melastatin 4 (TRPM4) is an ion channel that controls Ca2+ signals in excitable and non-excitable cells. However, there are no studies on TRPM4 in stem cells. In another study, …

Bacterial Xanthine Dehydrogenase Regulators, Smitha Sivapragasam

LSU Doctoral Dissertations

Bacteria are resilient organisms that tend to evolve rapidly in order to acquire abilities to survive in a constantly changing environment. Transcriptional regulators play a vital role in regulating the function of various essential proteins of the cell. The gene encoding Xanthine Dehydrogenase Regulator (XdhR), a transcriptional regulator, is divergently oriented to the gene cluster (xdhABC) encoding Xanthine Dehydrogenase (Xdh) protein in Streptomyces coelicolor, Agrobacterium tumefaciens and Ralstonia solanacearum. Xdh participates in purine salvage pathway in converting adenine to guanine. My research here is aimed at identifying the novel function of Xdh and XdhR in the above mentioned bacteria. XdhR …